Hybriddyne Forum - timer and magnetic apogee detection

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	Sep 7^th, 2010, 6:36pm
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timer and magnetic apogee detection (Read 2573 times)

Roman New Member Posts: 26	timer and magnetic apogee detection Dec 18^th, 2004, 3:13am hi, on this site: http://radelow.modellraketen.net/3/index.htm you can find a timer(D-Tim) and a magnetic apogee detection(Dentamag), these electronics work really nice!! cheers, Roman
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motorhead

Member

Posts: 53

Re: timer and magnetic apogee detection
Reply #1 - Dec 18^th, 2004, 4:33pm

The magnetic apogee detector looks very simple. I would have thought it to be more complicated. Being the primitive ugly American that I am, I basically only know curse words in other languages. On the net this comes up quite a bit, and although off topic I think y'all might find this interesting.

If you follow this link: http://babelfish.altavista.com/babelfish/tr

and type in http://radelow.modellraketen.net/3/index.htm

babelfish will translate the site in to the language you choose. It's not perfect but pretty cool.

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Roman

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Posts: 26

Re: timer and magnetic apogee detection
Reply #2 - Dec 19^th, 2004, 12:59am

well, I´m from Germany so its no problem for me to read that site Grin

, the babelfish translation is not very accurate but i think it`s good enough to understand everything Roll Eyes

i already used the D-Mag 2 times it worked perfectly but at the third time the rocket crashed, but i think it was my fault...
the rocket is completely shredded (i think about 700 g`s when it "touched" the ground) so we couldn`t see what worked wrong or what didn`t work...

cheers,
Roman

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rocketdev YaBB Administrator Posts: 626 Gender:	Re: timer and magnetic apogee detection Reply #3 - Dec 19^th, 2004, 9:16am In the USA you can get the magnetic apogee detector from Aerocon, look under electronics.
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Gilles

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Jupiter and Beyond
the Infinite

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Pressure measurement
Reply #4 - Jan 17^th, 2006, 8:53pm

Hello,

I hope I'm not to far of the initial subject...
Does anyone know if there is a great difference between :

obtaining rocket speed with a pitot probe (that take stagnation ans static pressures)

and

obtaining speed by pressures taken on 2 points (noze tip for stag P. and another on the fuselage por stat P.).

Thanks all,

Gilles

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rocketdev

YaBB Administrator

Posts: 626
Gender: male

Re: timer and magnetic apogee detection
Reply #5 - Jan 18^th, 2006, 9:08am

For vertical flight it is a little problematical. The air density is constantly changing so you have to process your data. Stagnation temperature at high velocities will probably shift the calibration of your baro sensor if it is more directly connected to the air flow (tip mounted port)

Deriving velocity from acceleration history is probably a better method.

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stone New Member Posts: 3 Gender:	Re: timer and magnetic apogee detection Reply #6 - Jan 13^th, 2009, 8:47am Quote from Roman on Dec 18^th, 2004, 3:13am: hi, on this site: http://radelow.modellraketen.net/3/index.htm you can find a timer(D-Tim) and a magnetic apogee detection(Dentamag), these electronics work really nice!! cheers, Roman The url above is gone, anyone got a backup? Cheers, Fredrik
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